X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=lib%2Flibrte_eal%2Flinuxapp%2Feal%2Feal_pci_init.h;fp=lib%2Flibrte_eal%2Flinuxapp%2Feal%2Feal_pci_init.h;h=7011753d09e9680d961739db8c6d7d0f3c42ec05;hb=97f17497d162afdb82c8704bf097f0fee3724b2e;hp=0000000000000000000000000000000000000000;hpb=e04be89c2409570e0055b2cda60bd11395bb93b0;p=deb_dpdk.git diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_init.h b/lib/librte_eal/linuxapp/eal/eal_pci_init.h new file mode 100644 index 00000000..7011753d --- /dev/null +++ b/lib/librte_eal/linuxapp/eal/eal_pci_init.h @@ -0,0 +1,127 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef EAL_PCI_INIT_H_ +#define EAL_PCI_INIT_H_ + +#include "eal_vfio.h" + +/* + * Helper function to map PCI resources right after hugepages in virtual memory + */ +extern void *pci_map_addr; +void *pci_find_max_end_va(void); + +int pci_uio_alloc_resource(struct rte_pci_device *dev, + struct mapped_pci_resource **uio_res); +void pci_uio_free_resource(struct rte_pci_device *dev, + struct mapped_pci_resource *uio_res); +int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx, + struct mapped_pci_resource *uio_res, int map_idx); + +int pci_uio_read_config(const struct rte_intr_handle *intr_handle, + void *buf, size_t len, off_t offs); +int pci_uio_write_config(const struct rte_intr_handle *intr_handle, + const void *buf, size_t len, off_t offs); + +int pci_uio_ioport_map(struct rte_pci_device *dev, int bar, + struct rte_pci_ioport *p); +void pci_uio_ioport_read(struct rte_pci_ioport *p, + void *data, size_t len, off_t offset); +void pci_uio_ioport_write(struct rte_pci_ioport *p, + const void *data, size_t len, off_t offset); +int pci_uio_ioport_unmap(struct rte_pci_ioport *p); + +#ifdef VFIO_PRESENT + +#define VFIO_MAX_GROUPS 64 + +int pci_vfio_enable(void); +int pci_vfio_is_enabled(void); +int pci_vfio_mp_sync_setup(void); + +/* access config space */ +int pci_vfio_read_config(const struct rte_intr_handle *intr_handle, + void *buf, size_t len, off_t offs); +int pci_vfio_write_config(const struct rte_intr_handle *intr_handle, + const void *buf, size_t len, off_t offs); + +int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar, + struct rte_pci_ioport *p); +void pci_vfio_ioport_read(struct rte_pci_ioport *p, + void *data, size_t len, off_t offset); +void pci_vfio_ioport_write(struct rte_pci_ioport *p, + const void *data, size_t len, off_t offset); +int pci_vfio_ioport_unmap(struct rte_pci_ioport *p); + +/* map VFIO resource prototype */ +int pci_vfio_map_resource(struct rte_pci_device *dev); +int pci_vfio_get_group_fd(int iommu_group_fd); +int pci_vfio_get_container_fd(void); + +/* + * Function prototypes for VFIO multiprocess sync functions + */ +int vfio_mp_sync_send_request(int socket, int req); +int vfio_mp_sync_receive_request(int socket); +int vfio_mp_sync_send_fd(int socket, int fd); +int vfio_mp_sync_receive_fd(int socket); +int vfio_mp_sync_connect_to_primary(void); + +/* socket comm protocol definitions */ +#define SOCKET_REQ_CONTAINER 0x100 +#define SOCKET_REQ_GROUP 0x200 +#define SOCKET_OK 0x0 +#define SOCKET_NO_FD 0x1 +#define SOCKET_ERR 0xFF + +/* + * we don't need to store device fd's anywhere since they can be obtained from + * the group fd via an ioctl() call. + */ +struct vfio_group { + int group_no; + int fd; +}; + +struct vfio_config { + int vfio_enabled; + int vfio_container_fd; + int vfio_container_has_dma; + int vfio_group_idx; + struct vfio_group vfio_groups[VFIO_MAX_GROUPS]; +}; + +#endif + +#endif /* EAL_PCI_INIT_H_ */